operator-precedence - w3toppers.com

Is short-circuiting logical operators mandated? And evaluation order?

Yes, short-circuiting and evaluation order are required for operators || and && in both C and C++ standards. C++ standard says (there should be an equivalent clause in the C standard): 1.9.18 In the evaluation of the following expressions a && b a || b a ? b : c a , b using the … Read more

Why are these constructs using pre and post-increment undefined behavior?

C has the concept of undefined behavior, i.e. some language constructs are syntactically valid but you can’t predict the behavior when the code is run. As far as I know, the standard doesn’t explicitly say why the concept of undefined behavior exists. In my mind, it’s simply because the language designers wanted there to be … Read more